The hydrodynamic slide bearing in the Arctic F12 PWM is equipped with an oil capsule to avoid any loss of lubricant. This makes the bearing as quiet as a slide bearing but with a significantly longer operating life. The PWM-function indicates exactly the speed at which the fan must run via the motherboard. This guarantees maximum cooling performance at minimum noise levels. The innovative design of the fan blades improves the flow of air and the possibility of much more efficient ventilation. The impeller has been designed with the focus on a minimum noise level and offers improved air flow and pressure.